<template>
  <div class="login">
    <div class="login-form">
      <h3 class="title">{{ loginTitle }}</h3>
      <el-tabs v-model="activeTab">
        <el-tab-pane label="账号登录" name="byUsername">
          <el-form ref="loginForm" :model="loginForm" :rules="usernameRules">
            <el-form-item prop="username">
              <el-input v-model="loginForm.username" type="text" auto-complete="off" placeholder="账号">
                <svg-icon slot="prefix" icon-class="user" class="el-input__icon input-icon"/>
              </el-input>
            </el-form-item>
            <el-form-item prop="password">
              <el-input v-model="loginForm.password" type="password" auto-complete="off" placeholder="密码"
                        @keyup.enter.native="handleLogin">
                <svg-icon slot="prefix" icon-class="password" class="el-input__icon input-icon"/>
              </el-input>
            </el-form-item>
            <el-checkbox v-model="loginForm.rememberMe" style="margin:0px 0px 25px 0px;">记住密码</el-checkbox>
            <el-form-item style="width:100%;">
              <el-button :loading="loading" size="medium" type="primary" style="width:100%;"
                         @click.native.prevent="handleLogin">
                <span v-if="!loading">登 录</span>
                <span v-else>登 录 中...</span>
              </el-button>
            </el-form-item>
          </el-form>
        </el-tab-pane>
        
        
      </el-tabs>

    </div>
    <!--  底部  -->
    <div class="el-login-footer">
      <span>{{ copyright }}</span>
    </div>
  </div>
</template>

<script>

import Cookies from "js-cookie";
import {encrypt, decrypt} from '@/utils/jsencrypt'

export default {
  name: "Login",
  data() {
    return {
      activeTab: "byUsername",
      loginTitle: process.env.VUE_APP_LOGIN_TITLE,
      copyright: process.env.VUE_APP_COPYRIGHT,
      
      loginForm: {
        username: "",
        password: "",
        loginType: "username",
        rememberMe: false
      },
      usernameRules: {
        username: [
          {required: true, trigger: "blur", message: "请输入您的账号"}
        ],
        password: [
          {required: true, trigger: "blur", message: "请输入您的密码"}
        ]
      },
      
      loading: false,
      redirect: undefined
    };
  },
  watch: {
    $route: {
      handler: function (route) {
        this.redirect = route.query && route.query.redirect;
      },
      immediate: true
    }
  },
  created() {
    this.getCookie();
  },
  methods: {
    getCookie() {
      const username = Cookies.get("username");
      const password = Cookies.get("password");
      const rememberMe = Cookies.get('rememberMe')
      this.loginForm = {
        username: username === undefined ? this.loginForm.username : username,
        password: password === undefined ? this.loginForm.password : decrypt(password),
        rememberMe: rememberMe === undefined ? false : Boolean(rememberMe),
        loginType: this.loginForm.loginType === undefined ? "username" : this.loginForm.loginType
      };
    },
    handleLogin() {
      this.$refs.loginForm.validate(valid => {
        if (valid) {
            this.doLogin()
          
        }
      });
    },
    doLogin() {
      this.loading = true;
      if (this.loginForm.rememberMe) {
        Cookies.set("username", this.loginForm.username, {expires: 30});
        Cookies.set("password", encrypt(this.loginForm.password), {expires: 30});
        Cookies.set('rememberMe', this.loginForm.rememberMe, {expires: 30});
      } else {
        Cookies.remove("username");
        Cookies.remove("password");
        Cookies.remove('rememberMe');
      }
      let loginBody = this.loginForm;
      console.log(loginBody)
      this.$store.dispatch("Login", loginBody).then(() => {
        this.$router.push({path: this.redirect || "/"}).catch(() => {
        });
      }).catch(() => {
        this.loading = false;
      });
    }
  }
};
</script>

<style rel="stylesheet/scss" lang="scss">
.login {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100%;
  background-image: url("../assets/images/login-background.png");
  background-size: cover;
}

.title {
  margin: 0px auto 30px auto;
  text-align: center;
  color: #707070;
}

.login-form {
  border-radius: 6px;
  background: #ffffff;
  width: 400px;
  padding: 25px 25px 5px 25px;

  .el-input {
    height: 38px;

    input {
      height: 38px;
    }
  }

  .input-icon {
    height: 39px;
    width: 14px;
    margin-left: 2px;
  }
}

.login-tip {
  font-size: 13px;
  text-align: center;
  color: #bfbfbf;
}

.login-code {
  width: 33%;
  height: 38px;
  float: right;

  img {
    cursor: pointer;
    vertical-align: middle;
  }
}

.el-login-footer {
  height: 40px;
  line-height: 40px;
  position: fixed;
  bottom: 0;
  width: 100%;
  text-align: center;
  color: #fff;
  font-family: Arial;
  font-size: 12px;
  letter-spacing: 1px;
}

.login-code-img {
  height: 38px;
}
</style>
